SIGNALTEK Operation Manual 5-3
pairs will match up properly. When two hub/switches are
connected to each other, or two PCs are connected to each other,
a "crossover" cable is used to make sure that the correct pairs are
connected.
The standard wiring for PCs is known as "MDI" (Media Dependent
Interface), and the standard wiring for hubs and switches is known
as "MDIX" (Media Dependent Interface with Crossover).
The result from the Link Establishment test indicates the type of
device to which SIGNALTEK is connected. MDI means that
SIGNALTEK is connected to a PC while MDIX means that it is
connected to a hub or switch.
Figure 5-2 Link Establishment Results
Bit Error Rate Tests
The Cable Performance, VoIP, Web, and IP Video tests are all
similar in that they utilize the Bit Error Rate Test function of the
Gigabit Ethernet chipset to test a link’s ability to support network
traffic at certain speeds without losing information. The primary
differences between these four tests are the packet size and fill
type. The Cable Performance test is the only test that has an
option to automatically set the failure threshold (pass/fail limit) in
accordance with IEEE 802.3 guidelines.
To Next Page
Need help?
General
